Update CLI chat session bridge (#697)

* feat: add CLI chat sessions with Python agent bridge

Introduce a new CLI chat mode that connects Web UI directly to Hermes
Agent's AIAgent via a Python bridge subprocess and Socket.IO, bypassing
the API Server /v1/responses path. Supports streaming, slash commands
(/new, /undo, /retry, /branch, /compress, /save, /title), interrupt,
and steer.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* feat: update CLI chat session bridge

* fix: extend agent bridge startup timeouts

* docs: update bridge chat session design

* feat: align bridge compression and provider registry

* chore: bump version to 0.5.20

---------

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

docker-compose.yml

@@ -14,6 +14,7 @@ services:
       - PORT=${PORT:-6060}
       - HERMES_HOME=/home/agent/.hermes
       - HERMES_BIN=/opt/hermes/.venv/bin/hermes
+      - PATH=/opt/hermes/.venv/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
       - AUTH_DISABLED=${AUTH_DISABLED:-false}
       - HERMES_ALLOW_ROOT_GATEWAY=1
     restart: unless-stopped